I have one PC with windows 7, Geforce 750 Ti GTX GPU with 3 digital display out (hdmi, dvi, and display port). I want to have my desktop show on monitor 1 and 2. And then I want monitor 3 to be an extension of monitor 2 only, so I can use monitor 2 and 3 as "dual displays" where desktop is on monitor 2 and I can use monitor 3 as "extra space" to do work on. Reason = Monitor 1 is upstairs and will be used mainly. Monitor 2 and 3 are both downstairs, sitting next to each other.